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Strength Training for Obesity Prevention

Recent obesity prevalence increases have made obesity prevention a clear and pressing public health issue. The average US. woman gains about 0.5 kg per year. Overweight women aged 25 to 44 have a higher prevalence of significant weight gains (BMI increases of > 5 kg/m2) than men or older or thinner women. The difficulty in successfully losing weight and maintaining weight loss has resulted in recommendations from several expert panels to advise overweight and mildly obese individuals free of co-morbidities to avoid weight gains rather than to lose weight. Physical activity is observed to decline with age while caloric intake remains stable or declines slightly. There is strong observational evidence that physical activity could prevent or attenuate age associated fat gains. This randomized, controlled behavioral intervention trial will test the hypothesis that regular participation in a twice weekly strength training program over 2 years, can prevent age associated body fat increases (total and abdominal fat) in 80 overweight to mildly obese premenopausal women between the ages of 25 and 44 years, compared to a 'standard care' group (n=80). The overall aim of the study is to prevent body fat gains and to reduce health risks associated with obesity. Treatment effects will be assessed for insulin sensitivity, blood pressure, blood lipids, muscle strength, and psychosocial predictors of strength training adherence. The innovation of this approach rests in its simplicity and the minimal time requirement for full participation (2 exercise sessions weekly). A preliminary study of this innovative approach resulted in 88% exercise session attendance over 12 months and maintenance of treatment effects on total body fat percentage to the end of pilot study measurements (9 months). This supports the feasibility and potential for long term efficacy of the proposed intervention approach. The long-term implication of success in this efficacy trial would be that this modest behavior change could prevent the fat gains and associated co-morbidities commonly observed in midlife women.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Recent obesity prevalence increases have made obesity prevention a clear and pressing public health issue. The average US. woman gains about 0.5 kg per year, 60 to 80% of which can be assumed to be fat. Overweight women aged 25 to 44 have a higher prevalence of significant weight gains (BMI increases of > 5 kg/m2) than men or older or thinner women. Total and visceral abdominal fat gains are associated with a variety of obesity co-morbidities, including insulin resistance, hypertension, and dyslipidemia. The difficulty in successfully losing weight and maintaining weight loss has resulted in recommendations from several expert panels to advise overweight and mildly obese individuals free of co-morbidities to avoid weight gains rather than to lose weight. Physical activity is observed to decline with age while caloric intake remains stable or declines slightly. There is strong observational evidence that physical activity could prevent or attenuate age associated fat gains. This randomized, controlled behavioral intervention trial will test the hypothesis that regular participation in a twice weekly strength training program over 2 years, can prevent age associated body fat increases (total and visceral abdominal fat) in 80 overweight to mildly obese premenopausal women (BMI 25-35 kg/m2) between the ages of 25 and 44 years, compared to a 'standard care' group (n=80). The overall aim of the study is to prevent body fat gains and to reduce health risks associated with obesity. Treatment effects will be assessed for insulin sensitivity, blood pressure, blood lipids, muscle strength, and psychosocial predictors of strength training adherence. The innovation of this approach rests in its simplicity and the minimal time requirement for full participation (2 exercise sessions weekly). A preliminary study of this innovative approach resulted in 88% exercise session attendance over 12 months and maintenance of treatment effects on total body fat percentage to the end of pilot study measurements (9 months). This supports the feasibility and potential for long term efficacy of the proposed intervention approach. The long-term implication of success in this efficacy trial would be that this modest behavior change could prevent the fat gains and associated co-morbidities commonly observed in midlife women.

Studientyp

Interventionell

Einschreibung

160

Phase

  • Phase 2

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • Minnesota
      • Minneapolis, Minnesota, Vereinigte Staaten, 55454
        • University of Minnesota, Division of Epidemiology

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

25 Jahre bis 44 Jahre (Erwachsene)

Akzeptiert gesunde Freiwillige

Ja

Studienberechtigte Geschlechter

Weiblich

Beschreibung

Eligible participants will include women between the ages of 25 and 44, BMI between 25 and 35 (inclusive).

Other inclusion/exclusion criteria:

  1. Weight stable (<5% body weight change over past year)
  2. No medical conditions or medications that would prohibit participation in an exercise program or would negatively impact our ability to test our primary aims (e.g. fibromyalgia, chronic fatigue syndrome, metabolic disorders, recent cardiovascular event, orthopedic limitations, any drug expected to impact body weight, psychiatric disorders requiring anti-psychotic drugs)
  3. Uncontrolled hypertension (systolic blood pressure over 160 and/or diastolic blood pressure over 99)
  4. No history of cancer within the past 5 years, excepting non-melanoma skin cancers
  5. Not currently or recently (past 6 months) pregnant
  6. Not planning to become pregnant during the study period
  7. Not currently or recently (past 2 months) lactating
  8. No history of physician diagnosed menstrual irregularities or significant gynecologic conditions (e.g. fibroids, endometriosis)
  9. Pre-menopausal
  10. Current non-smokers (for at least the past 2 years)
  11. Sedentary to modestly physically active (up to 3 sessions weekly of physical activity of no greater intensity than brisk walking) with no history of strength training within the past 6 months
  12. Not planning to move away from the Twin Cities area over the next 2 years

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Verhütung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Single

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn

1. April 2002

Studienabschluss

1. Juli 2005

Studienanmeldedaten

Zuerst eingereicht

7. Februar 2002

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

7. Februar 2002

Zuerst gepostet (Schätzen)

8. Februar 2002

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Schätzen)

13. Januar 2010

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

12. Januar 2010

Zuletzt verifiziert

1. Januar 2010

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Andere Studien-ID-Nummern

  • Schmitzm (completed)
  • 1R01DK060743-01 (US NIH Stipendium/Vertrag)

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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